Bottom stop for separable fasteners



April 25, 1944/ I D. MARlNsKY k 2,347,426

BOTTOM STOP FOR SEPARABLE FASTENERS Filed Jan. 11, 1943 l jig-5.1,.

M ll 4.- A.: Ik zi il INVENTOR BAV/.5 Mfl/P//v/rr Patented Apr. 25, 1944 BOTTOM STOP FOR SEPARABLE FASTENERS Davis Marinsky, Bronx, N. Y., assignor of onchalf to Louis H. Morin, Bronx, N. Y.

Application January 11, 1943, Serial No. 471,932

8 Claims.

This invention relates to separable fasteners employing stringers with a slider movable along the stringers to couple and uncouple the links or scoops thereof. More particularly, the invention relates to a bottom stop construction comprising, for the most part, an assemblage of a predetermined number of coupled end links retained against separation by a coupling pin or screw, thereby producing a substantially concealed end stop construction, and one facilitating movement of a portion of the slider over the end stop structure, thereby producing a neater and more finished appearance at such end of the fastener when attached to its support or supports, and also producing a strong and durable coupling.

'I'he novel features of the invention will be best understood from the following description when taken together with the accompanying drawing, in which certain embodiments of the invention are disclosed, and in which the separate parts are designated by suitable reference characters in each of the views, and in which:

Fig. l is an enlarged plan View of one end portion of a fastener with part of the construction broken away and in section, illustrating one form of end stop coupling which I employ, and

Fig. 2 is a view similar to Fig. l, showing a modified form of stop and omitting part of the construction.

In separable fasteners of the kind under consideration, it has been customary to employ what is commonly referred to as bottom stops in the form of members which are usually attached to the Stringer tapes beyond and adjacent end links of the stringers, and protruding sufficiently to be engaged by the slider in limiting downward movement of the slider on the stringers.

These various types of end stops have produced unnecessary bulk at the end or bottom of the stringers, materially complicating the attachment of the Stringer to various types and kinds of supports. Furthermore, these couplings which, as a rule, pierce the fabric of the tape and weaken the tape, result in a breakdown of the end stop structures long before the fastener has rendered its useful purpose.

It is the purpose of my invention to provide a bottom stop construction which is substantially contained Within the environment or wall structure of coupled end links or scoops of the stringers and substantially within the boundaries of the end links, thereby facilitating attachment of th'e stringers to supports. It is a further object to produce a stronger end stop in dispensing with the weakening of the tape structure, and a still further object to produce a neater and more finished appearance at the so-called bottom stop end of coupled stringers. It will also be apparent that by providing a coupling in the form of a screw, the same may be removed at will for repair or other purposes.

In the accompanying drawing is illustrated what might be termed short and long couplings. The shorter coupling as illustrated in- Fig. l is adapted for use in conventional cases-whereas the longer couplings may be employed where the so-called bottom ends of stringers are subjected to excessive stresses and strains, for example, in the application of fasteners to trousers.

In such instances. the longer coupling pins. screws or similar members will provide a greater degree of reinforcement in distributing the strain upon the stringer tapes over a longer length of the tape without interference with normal uses of the fastener.

In Fig. l of the drawing. III and II represents one end portion of two stringers of a separable fastener to the beaded edges of which are attached on spaced intervals links or scoops I2, I3 respectively, possessing double acting structure and function. In other words, each link or scoop has common coupling side portions I4, which include in the recesses thereof knobs or projections I5 adapted to enter apertures I I5 in the outer sub- 'stantially diamond shaped ends of the links or scoops.

At I1 is diagrammatically illustrated a slider movable along the stringers to couple and 'uncouple the links or scoops thereof, and at I8 is shown part of a pull employed to operate the slider. The slider II is of conventional construction. and includes at the wide end thereof the usualparting web I9.

As the stringers shown in Figs. l and 2 are of identical construction, like references are applied to both illustrations.

In forming the end or bottom stop construction, the links I2, I3 at one end'of two stringers are coupled together and when coupled, a few end links I2 are drilled out to form apertures 20 in alnement with the apertures I6 normally provided in the links I3. This drilling-operation will, of course, remove the members I5 of the links I2 in forming the apertures 20.

After the required number of links I2 are drilled, a coupling pin or screw ZI is then placed in the aperturesIB-ZII and retained therein in any' desired manner to secu're and couple the links I2, I3 against separation by the slider I'I, thus forming a stop limiting movement of the slider in the direction of said end of the stringers.

For illustrative purposes, I have shown in the accompanying drawing what is generally referred to as a drive screw, for uniting the links.

I2 and I 3. The teeth 22 of this type of screw will imbed themselves slightly in the wallspf the apertures i6-20 to retain the screw against displacement.

From a standpoint of production screws of this type and kind may be hopper fed to a machine in which the assembled stringers are placed in automatically driving the screws 2l in position. Where permanent mountings are desired, the screws 2l may have plain heads 23, but where it is desirable to remove the screws, these heads may be shaped or slotted for this purpose, as will be apparent.

With the type of link or scoop disclosed, itis necessary to form apertures in the links of one stringer only, howover, it must be understood that the invention is applicable to any type and kind of link or scoop construction and in some cases, apertures will be formed in the links or scoops of both stringers to receive the coupling pins or elements.

In the construction shown in Fig. 2 of the drawing, the structure of Fig. l is; modied only to the extent that more* of the links or scoops I2 are drilled to form the apertures 20-in order to receive a longer coupling pin or element 24 which has a stop head or end 25. This type of construction'is desirable where the stringers are to be attached to certain types and kinds of supports where the stringer ends are subjected to stresses or strains beyond the stresses or strains to which fasteners of normal use are subjected.

One of such installations and uses'is wherel the fasteners are applied to trousers. By using a longer coupling pin or element, an end stop coupling is provided which will dispense with the use of added reinforcements or checks for checking the strain on the stringers.

It will appear that the entire coupling element comprising the pins or drive screws 2|-24 and their heads 23-25 are retained g substantially within the boundary limits of the links or scoops and this construction provides free and -simplified attachment of the tape-ends 26 with supports beyond and adiacent the end link d3 of the stringer l I. There is thus produced a neat and finished appearance and elimination of the bulk usually prevailing where conventional types of end stops have been employed and attached to the tape ends 26 adjacent the end links. Furthermore, the full strength of the 'tape ends 26 is maintained, thus providing a more secure and dependable attachment of the tapes to the supports.

It will also be apparent that when it is desirable to attach each stringer independently to its support and thereafter coupling the stringers together, the pre-formed and predrilled stringers may be supplied, with the coupling pin or element, and the manufacturer may then apply the coupling pin or element in assembling the two supports to which the independent stringers have been attached. In other instances, the pin or element may be inthe form of ascrew readily attachable and detachable for the purposes stated.

Having fully described my invention, what I claim as new and 'desire to secure by Letters Patent is: y

1. An end stop for separable fastener stringers, having links or scoops adapted to be coupled and uncoupled by a slider movable along the stringers, end links of said stringers, when coupled together, having registering apertures forming an elongated passage, and a screw arranged in said passage and in threaded engagement with the links forming said passage for retaining said coupled links against separation.

2. An end stop for separable fastener stringers, having links or scoops adapted to be coupled and uncoupled by a slider movable along the stringers, end links of said stringers, when coupled together,

having registering apertures forming an elon1 gated passage, a screw arranged in said passage and in threaded engagement with the links forming said passage for retaining said coupled links against separation, and said screw having a head engaging the end link of one stringer.

3. The combination with coupled end scoops of separable fastener stringers, of a drive screw engaging coupled end scoops of both stringers to retain said scoops against separation. 4, In separable fasteners employing stringers, said stringers having end scoops which when coupled have registering apertures, a coupling member mounted in the registering apertures of said end scoops in retaining said scoops against separation, said member and scoops united thereby forming an end stop limiting movement of a slider in one direction on said stringers, and said member comprising a screw having threaded engagement with the scoops coupled thereby.

5. An end stop for separable fastener stringers,

each stringer having spaced scoops adapted to be coupled and uncoupled by a slider movable along the stringers, all of the end scoops of said stringers having inter-engaging couplings retaining the stringers against lateral separation, said end scoops, when coupled, having registering apertures forming an elongated passage extending through at least three scoops, and a coupling member arranged in and retained against displacement from said passage to permanently unite the coupled scoops against separation.

edges thereof, an end stop at one end of the stringers, said stop comprising a plurality of end scoops of the stringers with registering apertures therein forming in said scoops an elongated passage, a coupling member mounted in and re.

tained against displacement from the passage of said scoops in positively coupling said scoops, and said scoops having in addition to said coupling member other means coupling the scoops against lateral separation.

8. The combination with stringers having dou-` ble action scoops spaced longitudinally of one edge thereof, said scoops having common coupling por` tions on opposed surfaces thereof for coupling the stringers against lateral separation, of means forming an end stop of a plurality of coupled scoops at one end of` the stringers, said means comprising registering apertures in said coupled end scoops forming an elongated passage extending through said scoops, and a coupling member arranged in and retained against displacement from the passage of said coupled end scoops to positively retain said scoops against uncoupling.

DAVIS MARINSKY. 

